The vi.mock("../../../store/canvas") call was nested inside an it()
block. Vitest hoists all vi.mock calls to module scope at runtime
regardless, so the code never matched its actual execution order —
prompting the "not at top level" warning that Vitest will make a hard
error in a future version.
Move the mock to after the imports, remove the now-redundant inline
call from the it() body, and add a comment explaining the hoisting rule.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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